Questions on building my first chopper
I just got into building choppers and I noticed that there are different sizes of headset in the chopper world than in the mountain/road bike world.
I was given a chopper from someone because the head tube is bent so I'm buying a new frame to put all of the old parts on the new one. But I don't know how to measure the head tube to determine what size head set I need. I noticed on a chopper part websites that there are the standard 1", 1 1/8", but then there's 22.1mm, and 22.2mm. What is the difference between the inch and mm measurements and how do I find out what size my springer fork is and all that j***. Thanks!!!